Frame connection structure for stage erection

ABSTRACT

Disclosed therein is a frame connection structure for stage erection including first and second frames which respectively have a rectangular frame structure and are arranged perpendicularly to each other. First and second connection brackets respectively fix the first and second frames arranged perpendicularly to each other. Each of the first and second connection brackets includes: at least one head joining part formed for inserting and fixing a head part of a bolt thereinto; and at least one screw joining part formed inside the head joining part for joining a screw part of the bolt. The head joining part and the screw joining part are joined to each other in such a manner that the bolt joined to the head joining part of the first connection bracket is joined to the screw joining part of the second connection bracket.

CROSS REFERENCE TO RELATED APPLICATION

This application claims foreign priority benefits under 35 U.S.C. Section 119 and 172 of Korean Patent Application Serial No.: 10-2013-0064824, filed on Jun. 5, 2013, which is incorporated by reference in its entirety into this application.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a frame connection structure for stage erection, and more particularly, to a connection structure for connecting frames installed on a stage in order to construct supplementary installations, such as lights and billboards, on the stage.

2. Background Art

In general, in places for progressing various events or performances, such as theaters, auditoriums, concert halls or exhibition halls, in order to enhance effects of the events or performances, a frame structure is constructed above a stage and supplementary installations such as lights and billboards are installed on the frame structure.

Here, for the frame structure, three or four frames are arranged oppositely to each other, and then, the frames are connected with one another through subframes which are shorter than the frames, such that a modular structure is formed. Users can construct the frame structure in various forms using the modular structures. In detail, the users can construct the frame structure in various forms by intercrossing and connecting a plurality of the modular structure in different directions.

However, because the modular structures must be welded and stored in the cross-connected state in order to keep a sufficient assembling strength when they are cross-linked with each other, there is a great inconvenience in conveying them due to the volume when they are conveyed from a storage place to a stage where the modular structures are installed.

SUMMARY OF THE INVENTION

Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior arts, and it is an object of the present invention to provide a frame connection structure for stage erection which can be constructed on a stage when first and second frames are cross-connected with one another in different directions

To accomplish the above object, according to the present invention, there is provided a frame connection structure for stage erection including first and second frames which respectively have a rectangular frame structure and are arranged perpendicularly to each other. First and second connection brackets respectively fix the first and second frames arranged perpendicularly to each other. Each of the first and second connection brackets includes: at least one head joining part formed for inserting and fixing a head part of a bolt thereinto; and at least one screw joining part formed inside the head joining part for joining a screw part of the bolt. The head joining part and the screw joining part are joined to each other in such a manner that the bolt joined to the head joining part of the first connection bracket is joined to the screw joining part of the second connection bracket.

The thickness of each of the first and second connection brackets is greater than a vertical straight distance ranging from the edge of the connection bracket to the screw joining part.

Each of the first and second connection brackets comprises frame joining parts respectively formed at edges thereof for joining and fixing the first and second frames. A pair of or several pairs of the first head joining parts and the first screw joining parts are formed on each of sides of the first and second connection brackets in a symmetric form based on the center of each side.

The frame joining part includes: an insertion portion into which the first or second frame is inserted; and a fixing portion for pressing and fixing the first or second frame, which is inserted into the insertion portion, through a fixing plate to which a second bolt is joined.

The bolt joined to the screw joining part is fixed through a nut.

According to the preferred embodiment of the present invention, because the first and second frames which are cross-arranged in perpendicular direction to each other can be cross-connected with each other through first and second connection brackets which are joined with each other, the first and second frames can be transported in a separated state. Therefore, the frame connection structure for stage erection according to the preferred embodiment of the present invention can reduce the size of vehicles necessary for transporting the frames and also reduce transporting expenses because reducing volume of the frames.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiment of the present invention in conjunction with the accompanying drawings, in which:

FIG. 1 is a brief diagram of a frame connection structure constructed on a stage according to a preferred embodiment of the present invention;

FIG. 2 is a concrete diagram showing a part where first and second frames are cross-connected with each other by first and second connection brackets of the frame connection structure;

FIG. 3 is a perspective view showing the first connection bracket shown in FIG. 2;

FIG. 4 is a perspective showing a structure that the first and second connection brackets shown in FIG. 2 are joined to each other;

FIG. 5 is a view showing a structure that the first or second frame is joined and fixed to the first or second connection bracket shown in FIGS. 2; and

FIG. 6 is an enlarged view of an A part of FIG. 5.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

With reference to the attached drawings, example embodiments of a frame structure for stage erection according to the present invention will herein be described in detail. The example embodiments of the present invention are capable of various modifications and alternative forms, and particular embodiments of the present invention will be illustrated in the attached drawings and described in this specification in detail. It should be understood, however, that there is no intent to limit example embodiments of the invention to the particular forms disclosed, but on the contrary, example embodiments of the invention are to cover all modifications, equivalents, and alternatives falling within the technical idea and scope of the present invention. In the attached drawings, similar components have similar reference numerals even though they are illustrated in different figures. Additionally, in the attached drawings, dimensions of the components are more enlarged than they actually are in order to clarify the present invention.

It will be understood that terms, such as “first” or “second” may be used in the specification to describe various components but are not restricted to the above terms. The terms may be used to discriminate one component from another component. For instance, the first component may be named as the second component, and on the contrary, the second component may be also named as the first component within the scope of the present invention.

It will be further understood that the words or terms used in the present invention are used to describe specific embodiments of the present invention and there is no intent to limit the present invention. The singular form of the components may be understood into the plural form unless otherwise specifically stated in the context. It should be also understood that the terms of ‘include’ or ‘have’ in the specification are used to mean that there are characteristics, numbers, steps, operations, components, parts, or combinations of the steps, operations, components and parts described in the specification and there is no intent to exclude existence or possibility of other characteristics, numbers, steps, operations, components, parts, or combinations of the steps, operations, components and parts.

In the meantime, not otherwise particularly defined, it will be understood that all terms used in the specification including technical or scientific terms has the same meanings as to be generally or commonly understood by those of ordinary skill in the art. It will be further understood that words or terms described as the meaning defined in commonly used dictionaries shall be interpreted as having meanings that are consistent with their meanings in the context of the relevant art and the technical idea of the invention, and shall not be interpreted as having ideal meanings or excessively formal meanings, not otherwise particularly stated.

FIG. 1 is a brief diagram of a frame connection structure constructed on a stage according to a preferred embodiment of the present invention, and FIG. 2 is a concrete diagram showing a part where first and second frames are cross-connected with each other by first and second connection brackets of the frame connection structure.

Referring to FIGS. 1 and 2, the frame connection structure 1000 for stage erection according to the preferred embodiment of the present invention connects a plurality of first frames 20 and a plurality of second frames 30 with one another which are constructed on a stage 10 installed in places, such as theaters, auditoriums, concert halls or exhibition halls, constructed in order to progress various performances or events. In this instance, the stage 10 may be constructed to a predetermined height using a bridge as shown in FIG. 1, so that spectators can easily watch various performances or events.

Moreover, in order to show various performances or event even at night, lights or supplementary facilities, such as billboards for informing information, may be installed on the first and second frames 20 and 30 installed on the stage 10. For this, the first frames 20 out of the frames 20 and 30 may be installed in a pillar structure at both sides of the stage 10 or the second frames 30 may be installed in a ceiling structure above the pillar structure. Here, the first and second frames 20 and 30 may be formed in a long bar, and first and second subframes 50 and 60 which serve as bridges for connecting the frames may be respectively joined to the first and second frames 20 and 30 so as to support structural rigidity.

The frame connection structure 1000 serves to cross-connect the first frames 20 of the pillar structure and the second frames of the ceiling structure perpendicularly to each other. For this, the frame connection structure 1000 includes first and second connection brackets 100 and 200 which have the same structure and are respectively joined and fixed to the first and second frames 20 and 30. Therefore, the first and second connection brackets 100 and 200 are arranged perpendicularly to each other according to the structure of the first and second frames 20 and 30 which are crossed perpendicularly to each other.

Hereinafter, referring to FIGS. 3 and 4, the joining structure of the first and second connection brackets 100 and 200 which are arranged perpendicularly to each other will be described in more detail.

FIG. 3 is a perspective view showing the first connection bracket shown in FIG. 2, and FIG. 4 is a perspective showing a structure that the first and second connection brackets shown in FIG. 2 are joined to each other.

Referring to FIGS. 3 and 4, the first connection bracket 100 and the second connection bracket 200 which has the same structure as the first connection bracket 100 have a rectangular frame structure.

The first and second connection brackets 100 and 200 respectively includes: first and second head joining part 110 and 210 which are respectively formed to insert a head part 310 of a bolt 300 thereinto; and first and second screw joining parts 120 and 220 which are respectively formed to be joined with a screw part 320 of the bolt 300.

The first head joining part 110 is formed at a side of the first connection bracket 100. The first head joining part 110 is formed in such a manner that the head part 310 of the bolt 300 is inserted and joined in a perpendicular direction to the plane of the first connection bracket 100 in a state where the bolt 300 is arranged long in the exterior direction along the plane of the first connection bracket 100. Here, the first head joining part 110 includes a cut exposure groove 112 for exposing the screw part 320 in the exterior direction. In this instance, the exposure groove 112 is narrower than the head part 310 and bigger than or equal to the diameter of the screw part 320 such that the bolt 300 having the head part 310 inserted and joined to the first head joining part 110 does not separated from the exposure groove 112 in the exterior direction.

Furthermore, the second head joining part 210 is formed at a side of the first connection bracket 100 and is actually the same as the first head joining part 110 in structure, and hence, its detailed description will be omitted.

The first screw connection part 120 is substantially integrated with the first head joining part 110 just inside the first head joining part 110. The first screw connection part 120 is formed in such a manner that the screw part 320 of the bolt 300 which is arranged long perpendicularly to the plane of the first connection bracket 100. Therefore, the first screw connection part 120 has a diameter greater than or equal to the diameter of the screw part 320 and has a cylindrical structure elongated in a vertical direction. In this instance, the first screw joining part 120 may have a cut groove 122 formed at the center thereof in a longitudinal direction, such that the first connection bracket 100 can be easily manufactured through an extrusion process.

Additionally, the second screw joining part 220 is substantially integrated with the second head joining part 210 just inside the second head joining part 210 and is actually the same as the first screw joining part 120 in structure, and hence, its detailed description will be omitted.

In a state where the first connection bracket 100 which has the first head joining part 110 and the first screw joining part 120 and the second connection bracket 200 which has the second head joining part 210 and the second screw joining part 220 are arranged perpendicularly to each other, the bolt 300 is inserted and joined into the second head joining part 210, and then, the screw part 320 is inserted and joined into the first screw joining part 120, such that the first and second connection brackets 100 and 200 are joined perpendicularly to each other. In this instance, the bolt 300 joined to the first screw joining part 120 can be firmly fixed when a nut 400 is fastened to the opposite side of the head part 310. In addition, when the nut 400 is fastened to the bolt 300 in order to fix the bolt, it is preferable that the head part 310 of the bolt 300 be inserted and joined into the second head joining part 210 in an angular shape so that the bolt 300 does not run idle.

In the meantime, in order to make an edge side of the first connection bracket 100 be cleanly joined to the outside of the second connection bracket 200 on the same side in the thickness direction of the second connection bracket 200, it is preferable that the thickness(t) of the second connection bracket 200 be greater than a vertical straight distance(d) ranging from the edge of the first connection bracket 100 to the first screw joining part 120.

For convenience in description, it is described that the second head joining part 210 of the second connection bracket 200 and the first screw joining part 120 of the first connection bracket 100 are joined with each other through the bolt 300, but on the contrary, because the first and second connection brackets 100 and 200 have the same structure, the first head joining part 110 of the first connection bracket 100 and the second screw joining part 220 of the second connection bracket 200 may be joined with each other through the bolt 300.

In this instance, in order to make the joined structures of the first and second connection brackets 100 and 200 have a regular rule, a pair of or several pairs of the first head joining part 110 and the first screw joining part 120 and a pair of or several pairs of the second head joining part 210 and the second screw joining part 220 may be formed on each of sides of the first and second connection brackets 100 and 200 in a symmetric form based on the center of each side. For instance, two pairs of the first head joining part 110 and the first screw joining part 120 and two pairs of the second head joining part 210 and the second screw joining part 220 are respectively formed on the sides of the first and second connection brackets 100 and 200 in the symmetric form based on the center of each side.

Hereinafter, referring to FIGS. 5 and 6, the structure that the first and second frames 20 and 30 are respectively joined and fixed to the first and second connection brackets 100 and 200 will be described in more detail.

FIG. 5 is a view showing a structure that the first or second frame is joined and fixed to the first or second connection bracket shown in FIG. 2, and FIG. 6 is an enlarged view of an A part of FIG. 5.

Because the structures that the first and second frames are joined and fixed to the firsts and second connection brackets are actually the same, now, “first and second connection brackets” will be called “connection bracket”, and “first and second frames” will be called “frames”, and the “connection brackets” and the “frames” respectively have the same reference numerals as the “first connection bracket” and the “first frame”.

Referring to FIGS. 5 and 6, the connection bracket 100 includes frame joining parts 130 formed at four edges for joining and fixing the frames 20. The frame joining part 130 includes an insertion portion 140 for inserting the frame 20 thereinto and a fixing portion 150 for fixing the frame 20 inserted into the insertion portion 140.

The fixing portion 150 presses the frame 20 through a fixing plate 152 which gives pressure toward the frame 20 from the inside of the frame 20 inserted into the insertion portion 140. In this instance, in order to provide pressure for pressing the frame 20, a second bolt 154 is joined to the fixing plate 152 of the fixing portion 150. On the contrary, the frame 20 has a V-shaped or U-shaped cross section at a portion which meets with the fixing plate 152 in order to provide a space which sufficiently receives the pressure of the fixing plate 152 and to which the second bolt 154 is inserted.

Moreover, the fixing portion 150 further includes a guide portion 156 for preventing the fixing plate 152 from being separated from the frame 20 and guiding the bolt 14 inside the fixing plate 152 while the second bolt 154 is fastened to fix the frame 20. Alternatively, the fixing portion 150 may have a structure that holes (not shown) are formed in the frame 20 at regular intervals in the length direction and the bolts are inserted and fixed into the holes through elasticity, or may have a structure to fix the frames 20 in the form of a hook.

According to the preferred embodiment of the present invention, because the first and second frames 20 and 30 which are cross-arranged in perpendicular direction to each other can be cross-connected with each other through first and second connection brackets 100 and 200 which are joined with each other by the bolts 300, the first and second frames 20 and 30 can be transported in a separated state. Therefore, the frame connection structure for stage erection according to the preferred embodiment of the present invention can reduce the size of vehicles necessary for transporting the first and second frames 20 and 30 and also can reduce transporting expenses because reducing volume of the frames.

While the present invention has been particularly shown and described with reference to the example embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the technical idea or technical scope of the present invention as defined by the following claims. 

What is claimed is:
 1. A frame connection structure for stage erection comprising: first and second frames which respectively have a rectangular frame structure and are arranged perpendicularly to each other; and first and second connection brackets which respectively fix the first and second frames arranged perpendicularly to each other, each of the first and second connection brackets comprising: at least one head joining part formed for inserting and fixing a head part of a bolt thereinto; and at least one screw joining part formed inside the head joining part for joining a screw part of the bolt, wherein the head joining part and the screw joining part are joined to each other in such a manner that the bolt joined to the head joining part of the first connection bracket is joined to the screw joining part of the second connection bracket.
 2. The frame connection structure according to claim 1, wherein the thickness of each of the first and second connection brackets is greater than a vertical straight distance ranging from the edge of the connection bracket to the screw joining part.
 3. The frame connection structure according to claim 1, wherein each of the first and second connection brackets comprises frame joining parts respectively formed at edges thereof for joining and fixing the first and second frames, and wherein a pair of or several pairs of the first head joining parts and the first screw joining parts are formed on each of sides of the first and second connection brackets in a symmetric form based on the center of each side.
 4. The frame connection structure according to claim 3, wherein the frame joining part comprises: an insertion portion into which the first or second frame is inserted; and a fixing portion for pressing and fixing the first or second frame, which is inserted into the insertion portion, through a fixing plate to which a second bolt is joined.
 5. The frame connection structure according to claim 1, wherein the bolt joined to the screw joining part is fixed through a nut. 